Then last night, a video of Phantogram's "Mouthful of Diamonds" replaced that one.

Phantogram's "Mouthful of Diamonds" video:

So what does this mean? It's highly unlikely the official Coachella website would randomly throw up some unrelated music videos, so it's safe to these two bands are booked to play the polo fields in April. The activity also indicates that the lineup is almost ready to be released, my guess is we'll have an official poster next week.